Home / 43,505.04-65,279.88-21,318

Finding the Fourth Proportional to 43,505.04, 65,279.88 and 21,318

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Solution

The fourth proportional to 43,505.04, 65,279.88 and 21,318 is: 31,987.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,505.04 : 65,279.88 = 21,318 : x
  2. Step 2: Convert to fraction form
    43,505.04/65,279.88 = 21,318/x
  3. Step 3: Cross multiply
    43,505.04x = 65,279.88 × 21,318
  4. Step 4: Simplify right side
    43,505.04x = 1,391,636,481.84
  5. Step 5: Solve for x
    x = 1,391,636,481.84/43,505.04
  6. Step 6: Final answer
    x = 31,987.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.